请使用C++写一个冒泡排序

Sure, here's an example implementation of bubble sort in C:

void bubble_sort(int arr[], int n) {
    int i, j;
    for (i = 0; i < n-1; i++) {
        for (j = 0; j < n-i-1; j++) {
            if (arr[j] > arr[j+1]) {
                int temp = arr[j];
                arr[j] = arr[j+1];
                arr[j+1] = temp;
            }
        }
    }
}

This function takes an array `arr` of length `n` and sorts it in ascending order using the bubble sort algorithm.